Riichi Mahjong Calculator para Android

Riichi Mahjong Calculator, supporting features such as hand
efficiency, meld hand efficiency, winning hand analysis,
and point calculation for han and hu.

- Hand Efficiency: Includes tile efficiency, good shape tile
efficiency (for one-shanten only), and defense strategy.

- Meld Hand Efficiency: Tile efficiency for chi, pon, kan,
and pass; includes good shape tile efficiency (for one-shanten only) and defense strategy.

- Winning Hand Analysis: Defaults to Mahjong Soul/Tenhou rules,
with customizable rules to some extent.

- Han and Hu Point Calculation: Defaults to Mahjong Soul/Tenhou
rules, with customizable rules to some extent.